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[/] [openrisc/] [trunk/] [gnu-stable/] [newlib-1.18.0/] [newlib/] [libc/] [sys/] [linux/] [linuxthreads/] [lockfile.c] - Rev 859
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/* lockfile - Handle locking and unlocking of stream. Copyright (C) 1996, 1998, 2000 Free Software Foundation, Inc. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or modify it under the terms of the GNU Library General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. The GNU C Library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public License for more details. You should have received a copy of the GNU Library General Public License along with the GNU C Library; see the file COPYING.LIB. If not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ #include <sys/lock.h> #include <stdio.h> #include <pthread.h> #include "internals.h" #ifdef USE_IN_LIBIO #include "../libio/libioP.h" #endif #ifndef SHARED /* We need a hook to force this file to be linked in when static libpthread is used. */ const int __pthread_provide_lockfile = 0; #endif void __flockfile (FILE *stream) { __lock_acquire_recursive (*(_LOCK_RECURSIVE_T *)&stream->_lock); } #undef _IO_flockfile strong_alias (__flockfile, _IO_flockfile) weak_alias (__flockfile, flockfile); void __funlockfile (FILE *stream) { __lock_release_recursive (*(_LOCK_RECURSIVE_T *)&stream->_lock); } #undef _IO_funlockfile strong_alias (__funlockfile, _IO_funlockfile) weak_alias (__funlockfile, funlockfile); int __ftrylockfile (FILE *stream) { return __lock_try_acquire_recursive (*(_LOCK_RECURSIVE_T *)&stream->_lock); } strong_alias (__ftrylockfile, _IO_ftrylockfile) weak_alias (__ftrylockfile, ftrylockfile); void __flockfilelist(void) { #ifdef USE_IN_LIBIO _IO_list_lock(); #endif } void __funlockfilelist(void) { #ifdef USE_IN_LIBIO _IO_list_unlock(); #endif } void __fresetlockfiles (void) { #ifdef USE_IN_LIBIO _IO_ITER i; pthread_mutexattr_t attr; __pthread_mutexattr_init (&attr); __pthread_mutexattr_settype (&attr, PTHREAD_MUTEX_RECURSIVE_NP); for (i = _IO_iter_begin(); i != _IO_iter_end(); i = _IO_iter_next(i)) __pthread_mutex_init (_IO_iter_file(i)->_lock, &attr); __pthread_mutexattr_destroy (&attr); _IO_list_resetlock(); #endif }
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